EM-II MMf,ZPF,ASA method

Which parameter of a synchronous generator affects its voltage regulation when using the MMF method?

• a) Armature resistance

• b) Field resistance

• c) Load angle

• d) Synchronizing power

What is the typical range of voltage regulation for a synchronous generator using the MMF method?

• a) 0-5%

• b) 5-10%

• c) 10-15%

• d) 15-20%

Which of the following is a method of voltage regulation?

• a) ZPF method

• b) ASA method

• c) Both A and B

• d) None of the above

In the ZPF method of voltage regulation, what is ZPF?

• a) Zero Power Factor

• b) Zero Power Feedback

• c) Zero Power Flow

• d) Zero Power Frequency

The ZPF method of voltage regulation is based on the principle of

• a) Compensation of voltage drop in transmission line

• b) Compensation of reactive power

• c) Compensation of active power

• d) None of the above

The ASA method of voltage regulation is used in

• a) DC generators

• b) AC generators

• c) Both A and B

• d) None of the above

The ASA method of voltage regulation is based on the principle of

• a) Excitation current

• b) Load current

• c) Speed regulation

• d) Voltage regulation

The ZPF method of voltage regulation is mainly used in

• a) Small power stations

• b) Large power stations

• c) Substations

• d) Transformers

In the ZPF method of voltage regulation, the voltage is regulated by changing the

• a) Active power

• b) Reactive power

• c) Both A and B

• d) None of the above

The ZPF method of voltage regulation uses which type of transformer?

• a) Step-up transformer

• b) Step-down transformer

• c) Auto-transformer

• d) Distribution transformer